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  • Highly stable gelatin layer-protected gold nanoparticles as surface-enhanced Raman scattering substrates.

Highly stable gelatin layer-protected gold nanoparticles as surface-enhanced Raman scattering substrates.

Journal of nanoscience and nanotechnology (2014-04-18)
Changwon Lee, Peng Zhang
PMID24738391
ABSTRACT

Amine and carboxylic groups rich gelatin was used as reducing and stabilizing agent to form highly stable gold nanoparticles for surface-enhanced Raman scattering (SERS) applications. The size of the particle was determined to be 13 nm by TEM with mono-dispersity. The size of the gold nanoparticles was little affected by the initial gelatin concentration. The gelatin-gold nanoparticles show strong SERS activity with Rhodamine 6G and Ruthenium bipyridine as reporter molecules. Both carboxylic acid groups and amine groups were identified by FT-IR to be present on the gelatin-gold nanoparticle surface, providing the possibility of further conjugation with other molecules. The gelatin-protected gold nanoparticles prepared by this simple, green, method displayed very good solubility and stability in many solvents, and good monodispersity, all desirable features as good SERS substrates.

MATERIALS
Product Number
Brand
Product Description
265772
Sigma-Aldrich
Gold, powder, <45 μm, 99.99% trace metals basis
G9382
Sigma-Aldrich
Gelatin from bovine skin, gel strength ~225 g Bloom, Type B
GF92960286
Gold, tube, 50mm, outside diameter 8mm, inside diameter 7.8mm, wall thickness 0.1mm, as drawn, 99.95%
GF72963221
Gold, insulated wire, 0.5m, conductor diameter 0.125mm, insulation thickness 0.014mm, polyester insulation, 99.99%
GF92307922
Gold, insulated wire, 5m, conductor diameter 0.05mm, insulation thickness 0.007mm, polyester insulation, 99.99%
GF37996789
Gold, tube, 200mm, outside diameter 2.0mm, inside diameter 1.7mm, wall thickness 0.15mm, as drawn, 99.95%
GF47078129
Gold, microleaf disks, 10mm, thinness 0.5μm, specific density 966μg/cm2, removable support, 99.99+%
GF43173930
Gold, rod, 25mm, diameter 3.0mm, as drawn, 99.95%
GF05586969
Gold, tube, 100mm, outside diameter 3.0mm, inside diameter 2.8mm, wall thickness 0.10mm, as drawn, 99.95%
GF88214542
Gold, insulated wire, 1m, conductor diameter 0.05mm, insulation thickness 0.007mm, polyimide insulation, 99.99%
GF26034320
Gold, tube, 100mm, outside diameter 10.0mm, inside diameter 9.7mm, wall thickness 0.15mm, as drawn, 99.95%
GF41857409
Gold, insulated wire, 0.5m, conductor diameter 0.025mm, insulation thickness 0.005mm, polyester insulation, 99.99%
GF91804271
Gold, insulated wire, 2m, conductor diameter 0.075mm, insulation thickness 0.012mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF59949264
Gold, tube, 200mm, outside diameter 1.0mm, inside diameter 0.5mm, wall thickness 0.25mm, as drawn, 99.95%
GF45838985
Gold, insulated wire, 0.5m, conductor diameter 0.125mm, insulation thickness 0.016mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF04885937
Gold, tube, 100mm, outside diameter 1.0mm, inside diameter 0.5mm, wall thickness 0.25mm, as drawn, 99.95%
GF46990974
Gold, microfoil, disks, 10mm, thinness 0.05μm, specific density 101.3μg/cm2, permanent mylar 3.5μm support, 99.99+%
GF39029968
Gold, rod, 100mm, diameter 2.0mm, as drawn, 99.95%
GF22371319
Gold, rod, 25mm, diameter 4.0mm, as drawn, 99.95%
GF25294620
Gold, microfoil, disks, 10mm, thinness 0.01μm, specific density 20.7μg/cm2, permanent mylar 3.5μm support, 99.99+%
GF23782350
Gold, microfoil, disks, 10mm, thinness 0.1μm, specific density 204.1μg/cm2, permanent mylar 3.5μm support, 99.99+%
GF03557336
Gold, rod, 10mm, diameter 6.0mm, as drawn, 99.95%
GF18334436
Gold, insulated wire, 1m, conductor diameter 0.075mm, insulation thickness 0.012mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF50454132
Gold, insulated wire, 2m, conductor diameter 0.125mm, insulation thickness 0.014mm, polyester insulation, 99.99%
GF75346678
Gold, insulated wire, 0.5m, conductor diameter 0.075mm, insulation thickness 0.012mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF06182940
Gold, tube, 50mm, outside diameter 1.0mm, inside diameter 0.5mm, wall thickness 0.25mm, as drawn, 99.95%
GF04839767
Gold, tube, 100mm, outside diameter 1.60mm, inside diameter 0.6mm, wall thickness 0.5mm, as drawn, 99.95%
GF96742479
Gold, rod, 50mm, diameter 3.0mm, as drawn, 99.95%
GF54796304
Gold, insulated wire, 1m, conductor diameter 0.05mm, insulation thickness 0.007mm, polyester insulation, 99.99%
GF38598980
Gold, microfoil, disks, 10mm, thinness 0.5μm, specific density 966μg/cm2, permanent mylar 3.5μm support, 99.99+%